Welland South

{{one source|date=June 2023}}

{{Infobox Canada electoral district|name=Welland South|province=Ontario|prov-status=defunct|prov-created=1967|prov-abolished=1975|prov-election-first=1967|prov-election-last=1971|demo-census-date=|demo-census-pop=|demo-census-electors=|demo-electors-date=|demo-area=|demo-cd=|demo-csd=}}

Welland South was an electoral riding in Ontario, Canada. It existed from 1967 to 1975, when it was abolished when the riding was redistributed into Erie. It consisted of the southern areas of the city of Welland. It was only represented by Liberal Ray Haggerty.{{Cite web |date=1967-10-17 |title=Raymond Haggerty {{!}} Legislative Assembly of Ontario |url=https://www.ola.org/en/members/all/raymond-louis-haggerty |access-date=2023-06-13 |website=www.ola.org |language=en}}